Drop hammer



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Patented July 8, 1919.

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DROP HAMMER.

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APPLICATION FILED SEPT. 5. I9I8` l I I x INvENToR: ARTH u R ORT ATTO RNE(l THE COLUMBIA PLANOGRAIII C0.. WASHINGTON. D. C.

A. MORT.

DROP HAMMER.

APPLlcATIoN FILED SEPT. 5. 191s.

1,309,298. Patented July 8, 1919.

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INYENTQR: RTHUR M ORT BVWCMM 'rHri coLUMnM PLANDGRAPH co.. WASI-UNGTDN, D. C:

UNITED STATES PATENT OFFICE.

ARTHUR MORT, OF LINCOLN, ENGLAND.

DROP-HAMMER.

Application led September 5, 1918.

ments in Drop-Hammers, of which the following is a full, clear, and-exact speciiication.

This invention relates to drop hammers the tup of which is adapted to be lifted by mechanical means. The invention consists in the adaptation to such a. hammer of an epicyclic gear or sun and planet train of wheels.

(lne embodiment of the invention is illustrated in the accompanying drawings in which Figure l is a front view and Fig. 2 an end View of a drop hammer showing, by

2 Oway of example, the adaptation of an epicyclic gear thereto. Fig. 3 is a detail view of the overhead gearing to enlarged scale and Fig. 4 an end view of the gear elements.

Referring to the drawings, surn'iounting the superstructure of the drop hammer is a driving shaft A fitted with a fly-wheel A and carrying a driving pulley B or the like whereby the shaft may be driven from a suitable source of power. On the shaft A is mounted an epicyclic gear inclosed within a gear case D forming an oil bath, said gear comprising a sun pinion E keyed to the shaft A, two or more planet pinions F adapted to be driven thereby and an internal gear element Gr integral with the brake wheel H and fitted with a band brake I-I, said internal gear element G being meshed by said pinions F. The planet wheels F are mounted on pins I to which is secured the boss J of lifting arms K for raising the hammer tup, a guide pulley L being mounted on the shaft A between the lifting arms K foi guiding the ropes or the like connecting the said lifting arms and the hammer tup.

With this arrangement when the brake is free the sun pinion E and the brake Wheel Specification of Letters Patent.

Patented July S, 1919.

Serial No. 252,794.

H revolve, and the planet pinions F operatively connected with the lifting arms K and thus with the ropes or the like remain stationary. `When the brake is applied, the brake wheel I-I ceases to revolve or revolves only slowly and the planet pinions F revolve, carrying with them the lifting arms K, thereby lifting the hammer tup. On subsequent release of the brake the hammer tup falls by gravity. A. high speed is thus obtained for the driving shaft A, an intermediate speed for the brake wheel I-I and a slow speed for lifting the hammer head.

As will be understood, the arrangement of the epicyclic gear may be modified withont departure from the invention.

V7 hat I claim is:

l. In a drop hammer in combination with a hammer tup and lifting arms for raising the tup, means for actuating said lifting arms and anA epicyclic gear controlling the actuation of said lifting arms by said means, substantially as and for the purpose set forth.

In a drop hammer in combination with a hammer tup and lifting arms for raising the tup, means for actuating said lifting arms, and an epicyclic gear interposed between said lifting arms and said means, whereby to control said lifting arms, substantially as and for the purpose set forth.

3. In a drop hammer in combination with a hammer tup and lifting arms for raising the tup, means for actuating said lifting arms, and an epicyclic gear controlling the actuation of said lifting arms, said lifting arms being in pin-joint connection with said gear, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR MGRT.

lVitnesses:

Trios. H. Coon, C. M. I-IITGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1D. G. 

